Catalogue
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Marconi Radio Valve Type DE3C, by Marconi Company, London, c. 1924
Inventory Number: 20731
Number of documents: 2
Document Type: Miscellaneous Note
Document Heading: Technical Details - Marconi Radio Valve Type DE3C
Text:
The DE3 valve was introduced in 1923 and was intended for general purpose applications, although was primarily used as a detector or Audio Frequency (AF) amplifier.
Document Type: Miscellaneous Note
Document Heading: Manufacturer Details
Text:
Marconi-Osram Valve Co. Ltd. was founded in 1919, and took over the manufacture of Marconi valves from Ediswan, the trade name of the Edison and Swan United Electric Light Company Limited. The M-OV, as it was later known, was a joint Marconi-GEC valve-manufacturing company. It produced all of its valves at the Osram Lamp Works at Hammersmith, London.
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